What’s Vulnerable › Vulnerabilities

CVE-2020-24313

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-08-26 · updated 2026-06-17
• Weakness: CWE-79

Description

Etoile Web Design Ultimate Appointment Booking & Scheduling WordPress Plugin v1.1.9 and lower does not sanitize the value of the "Appointment_ID" GET parameter before echoing it back out inside an input tag. This results in a reflected XSS vulnerability that attackers can exploit with a specially crafted URL.

Affected products

• Etoilewebdesign Ultimate Appointment Booking & Scheduling: through 1.1.9

References

• https://wordpress.org/plugins/ultimate-appointment-scheduling/
• https://zeroaptitude.com/zerodetail/wordpress-plugin-bug-hunting-part-1/
• https://wordpress.org/plugins/ultimate-appointment-scheduling/
• https://zeroaptitude.com/zerodetail/wordpress-plugin-bug-hunting-part-1/

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